42642166 has 8 divisors (see below), whose sum is σ = 73100880. Its totient is φ = 18275208.

The previous prime is 42642133. The next prime is 42642179. The reversal of 42642166 is 66124624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522921 + ... + 1522948.

It is an arithmetic number, because the mean of its divisors is an integer number (9137610).

Almost surely, 2^42642166 is an apocalyptic number.

42642166 is a deficient number, since it is larger than the sum of its proper divisors (30458714).

42642166 is a wasteful number, since it uses less digits than its factorization.

42642166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045878.

The product of its digits is 13824, while the sum is 31.

The square root of 42642166 is about 6530.0969364934. The cubic root of 42642166 is about 349.3652877635.

The spelling of 42642166 in words is "forty-two million, six hundred forty-two thousand, one hundred sixty-six".